Attachment for cultivator and seeder teeth



2 Sheets-Sheet 1.

(No Model.)

H. 0.' LEWIS.

ATTAOHMENT POR CULTIVATOR AND SEEDER TEETH.

Patented Jan.6,-1885.

Invenfior, I

7 WJ .w n w /.T. 6 L/Q.r,4U L fl r e 7 w "i/bn 0 8868.

2 Sheets-Sheet 2.

(No Model.)

' H. O. LEWIS.

ATTACHMENT FOR GULTIVATOR AND SEEDER TEETH.

No. 310,290. Patented Jan. 6, 1885.

FWZ.

ZOi/fiH/GSSGSI Invenfor,

- 25 @M j a'mm 5 Jar-may UNITED STATES PATENT OFrIcE.

llilfGl'lj O. LE\VIS, OF PORTAGE, \VISCONSIN.

ATTACHMENT FOR CULTIVATOR AND SEEDER TEETH.

SIPECIFICATION forming part of Letters Patent No. 310,290, dated January 6, 1885.

A pplicaiion filed December H, 1883.

To ctZZ whom it may concern.-

Be it known that 1, HUGE O. LEWIS, a citizen of the United States, and a resident of Portage, in the county of Columbia and State of Wisconsin, have invented certain new and useful Improvements in Attachments for Cultivator and Seeder Teeth; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention relates to cultivator and seeder teeth.

It consists, essentially, of the combination of a cultivator or seeder tooth attached to a sleeve pivoted to the drag-bar, a curved retracting'spring secured to the back of said drag-bar and connected by its free end with the top of said sleeve, and an auxiliary spring provided atits end with a small wheel or roller which rests against a step formed near the end of the retracting-spri ng, and prevents the same from yielding too easily-to a strain at its inception.

The object of my invention is to provide a cultivator or seeder tooth with an elastic connection with the drag-bar, whereby the tooth will yield whenever it strikes an obstruction.

In the accompanying drawings like letters refer to the same parts in each figure.

Figure 1 is a perspective view of my improved device, and Fig. 2 is a vertical medial section of a cultivator-tooth and the sleeve to which it is attached, in connection with a portion of the drag-bar to which it is pivoted.

M is the standard or drag-bar, to the rear end of which is pivoted the tooth-supporting sleeve E.

G is the shovel or tooth proper, secured by bolt 12 to the front and lower end of sleeve E. The upper edge of said sleeve E is formed of small round iron a, below which it is cut away in the rear and also in frontof the dragbar M, as shown in Fig. 2, so as to prevent said sleeve when it swings forward from catching and clogging with dirt, whereby it is prevented from swinging back to its proper position against said drag-bar M. The small (No model.)

round iron to will readily cut its way through whatever dirt chances to stick thereto or to the front of said di'agbar.

The shovel G and sleeve E may be formed together in a single piece, although I prefer the construction above described.

A is a scroll or curved retracting-spring, rigidly secured at its base, together with the auxiliary spring B, to the rear of the draftbar M, by means of the clip F. The spring A may be made single or with two or more leaves, according to the stiffness desired. I secure a sufficiently stiff spring by inserting a single extra leaf at the base of spring A, as shown in Fig. 1 of the drawings. The free or rear end of said spring A is formed into the ear or step P, perforated to receive the eye bolt D, held therein by nut c. Said eyebolt D is connected with the rear upper corners of sleeve E by means of the bail N, which straddles the draft-bar when the upper end of said sleeve is thrown forward, thereby allowing the tooth or shovel to swing back sufficiently to clear any obstacle in its way. A set-bolt, 0, is inserted through a vertical threaded perforation in the eyebolt D, so that its point will press against the under side of spring 13. By means of this device the roller 0 may be set farther from or nearer to the upper edge of the step P, so that the spring A will yield to a greater or less pressure, as desired.

In place of the set-bolt 0, I may use, in connection with nut c, a second nut on eyebolt D, inside of step 1, whereby said step may be set in or out, and the roller 0 nearer to or farther from the upper edge of said step, according to the resistance desired to the compression'of spring A and the tripping of the tooth G.

My improved cultivator or seeder tooth opcrates as follows: The roller 0 is first set so as to allow the spring A to yield more or less readily, according to the character of and the obstructions in the soil to be broken. \Vhenever the tooth or shovel G strikes an obstinate obstruction, like a stump or rock, the sleeve E will swing upon its pivot, compressing the spring A, and thereby thrusting the small roller 0 up into the receding portion of spring A, where the spring B exerts less resistance to its compression than when it presses against the step P at the inception of its movement. As soon as the shovel clears the obstruction the spring Awill expand, drawing the sleeve back against the drag-bar and the shovel into its first position. At the same time the spring B causes the roller 0 to resume its position against step 1?.

The dotted lines in Fig. l of the drawings represent the position which the various parts of my device assume when the tooth G is thrown back.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with a cultivator or seeder tooth pivoted to the drag-bar M. of the curved retracting-spring A, connected with the top of said tooth, auxiliary spring B, at tached to said drag-bar and bearing at its rear end against spring A, and drag-bar M, substantially as and for the purposes set forth.

2. The combination, with a cultivator or seeder tooth pivoted to the drag-bar M, of the curved retracting-spring A, connected with said tooth, auxiliary spring B, provided with roller 0, and drag-bar M, substantially as and for the purposes set forth.

3. In a cultivator or seeder, the combination of the tooth or shovel G, attached to the lower end of sleeve E, pivoted to the dragbar, curved retracting-spring A, connected with the top of said sleeve by means of the eyebolt D and bail N, and auxiliary spring B, provided at its end with small roller 0, hear ing against a step in said spring A, whereby resistance is offered to the compression of said spring A at its inception, substantially as and for the purposes set forth.

at. In combination with a cultivator or seeder tooth, pivoted, as herein described, to the drag bar, the curved retracting-spring A, connected with the upper end of said tooth by means of eyebolt D and bail N, auxiliary spring B, provided with small roller 0, and set-bolt 0, adapted to regulate the position of the roller 0 and the resistance of spring B to the compression of spring A, substantially as and for the purposes set forth.

5. The combination, with the drag-bar M, 01

rear and in front of said drag-bar, the loop a, connecting the sides of said sleeve at its upper end, and passing around the frontof said drag-bar, and formed into loops or hooks for the attachment of spring A, and spring A, substantially as and for*the purposes set forth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two 5 witnesses.

l HUGH O. LEVIS. l \V itnesses:

i HUGH RYAN,

l CHAS. L. Goss.

the sleeve E, pivoted thereto and open at the x 

